{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T08:11:27.474Z","years_from_j2000":26.666,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hd-8467","name":"HD 8467","class":"g5_yellow_star","category":"star","object_type":"G5 yellow star","mag":8.39,"mag_band":"V","abs_mag":5.875,"abs_mag_band":"V","distance_ly":103.8384059736796,"distance_method":"parallax","ra_deg":21.116519999999998,"dec_deg":39.062062,"epoch_ra_deg":21.504944,"epoch_dec_deg":39.201921,"epoch_moved_arcsec":5.661,"pm_ra_mas_yr":210.15,"pm_dec_mas_yr":-30.12,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-8467","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"01245+3902","age_years":6522621000,"companions":[{"measured":2015,"magnitude":9.79,"components":"CD","discoverer_code":"STTA 17","separation_arcsec":68.9,"position_angle_deg":279},{"measured":2015,"magnitude":13.3,"components":"CE","discoverer_code":"STTA 17","separation_arcsec":81.2,"position_angle_deg":14}],"mass_solar":0.858,"radius_solar":0.824,"spectral_type":"G5","color_index_bv":0.784,"luminosity_solar":0.3890451449942805,"metallicity_fe_h":-0.17,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2007AJ....133.2524W, quality D)","surface_gravity_log_g":4.51,"surface_temperature_k":5214,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":210.15,"proper_motion_dec_mas_yr":-30.12,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.452},"designations":[{"catalog":"HD","designation":"HD 8467"},{"catalog":"HIP","designation":"HIP 6575"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}